S2000 L4-2.2L (2004)
Idle Speed: Testing and Inspection
Idle Speed Inspection
NOTE:
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Leave the IAC valve connected.
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Before checking the idle speed, check these items:
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The MIL has not been reported on.
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Ignition timing
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Spark plugs
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Air cleaner
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PCV system
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On Canadian models, pull the parking brake lever up. Start the engine, then check that the headlights are off.
1. Disconnect the EVAP canister purge valve 2P connector.
2. Connect a tachometer.
3. Start the engine. Hold the engine at 3,000 rpm with no load (in neutral) until the radiator fan comes on, then let it idle.
4. Check the idle speed with no-load conditions: headlights, blower fan, radiator fan, and air conditioner off.
Idle speed should be:................................................................................................................................................................................800 ± 50 rpm
5. Idle the engine for 1 minute with the heater fan switch on HI and the air conditioner on, then check the idle speed.
Idle speed should be:................................................................................................................................................................................900 ± 50 rpm
NOTE: If the idle speed is not within specification, see Symptom Chart. See: Powertrain Management/Computers and Control Systems/Testing
and Inspection/Symptom Related Diagnostic Procedures
6. Reconnect the EVAP canister purge valve 2P connector.
